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Which one of the following is not true for a species?

  1. A
    Members of a species can interbreed
  2. B
    Variations occur among members of a species
  3. C
    Each species is reproductively isolated from every other species
  4. D
    Gene flow does not occur between the populations of a species

Solution & Step-by-step Explanation

Gene flow does occur between the populations of a species. Gene flow is the movement of genes from one population to another, and it is an important mechanism for increasing genetic variation within a species. So, the correct answer is option D. Notice that the other options are correct. Members of a species can interbreed, variations do occur among members of a species, and each species is reproductively isolated from every other species.

Practice this question

Try it yourself before checking the explanation above.

Which one of the following is not true for a species?
A
Members of a species can interbreed
B
Variations occur among members of a species
C
Each species is reproductively isolated from every other species
D
Gene flow does not occur between the populations of a species

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